I’ve been thinking this for ages (be nice):
Re-winged Y-9, modified (extended etc.) fuselage and 2 x WS-20 (1 under each wing) … and call it day?
At some point much farther in the future, they can look at C919 and CR929…
Given the degrees of work needed and the development of 919 and 929 they seem like closers to realistically being an option than a Jet powered Y9 ER.
With the same radar, you can add more fuel and command facilities to a Y-20 for greater endurance and versatility.
With a larger radar, you can have equal endurance.
More fuel is one aspect of endurance not the only one. You have to consider the human element. The crew have a set amount of time before they fail due to lack of sleep. If fuel if your concerns I would suggest taking the Y20 airframe and making a tanker instead.
Adding additional mission sets is perhaps the best most rational reason. The 4 engines should generate plenty of electricity for additional mission equipment. Okay perhaps.
The question is whether that greater capability is actually worth the development, testing and procurement of a Y-20 based AEWC, versus whether the KJ-500 solution is already sufficient for now, especially given the increasing trend of moving towards more distributed, more dynamic and more survivable AEW solutions into the future.
If KJ-500 is already a sufficiently capable AEWC platform, it may be more sensible to just continue buying them, and put money to develop and procure a more future proof and survivable AEWC solution instead.
Personally I am not sure what the specific correct answer is at this time.
That’s the next aspect. Right now No UAV do AWACS primarily due to power limitations. At best we could add datalinks to UAVs and have them relay day from strike fighters to CAP or recon birds to SEADs
The key advantage of the Y9 base for the KJ500 seems to be the STOL. The ability to park them on short less developed fields and have them pop up as needed. If the PLAAF could build enough of them they could cycle them in and out of action fast maintaining a sphere of control. Which would make Y9 based KJ500 more logical.
Pretty sure the same forces/ reasons that compelled Russia to create A-50 and China to even pursue KJ2000 is at play here. Why is Russia developing A100? Maybe that's the point where one may start.
Russia is developing the A100 as its A50 are old. Kj500 are very new birds. They also have a preference to STOL on military bases which likely farther points to the IL76 based airframe.
And a cursory internet search offered simple answers : Russia didn't have a reliable civilian airliner platform for conversion back when it wanted to give a reply to E3 development. When it considered the options available, the il 76 was an easy pick.
the IL86 would like to know your location.
The Russians had an alternative they even used it for a Command and control aircraft the IL87 and IL80.
The IL96 is a farther development of that family.
Russia could've picked the il96 for A100 but look at the production numbers - it'd be good to have 1 produced every year. The il76, along with the many variants is nearing the thousand figure. China is picking the Y20 for the same reasons. And we would, if we are to believe the above, come to the realization that KJ3000 might be the last of AWACS based on a mil transport platform. If China gets civilian transport success China would make the shift to that.
Russia has used the IL96 for a number of special mission aircraft but the cost and field performance are key limitations. The Russian airbases are not built to the same standards as civilian airports. Farther complicating Then came the decline of the USSR.
The Russians didn’t have another option through the 1990s as though in the 1980s they experimented with other platforms, But the economy was in pieces. The factories that made essential products often ended up in other countries. They set to update what they had on hand build it in Russia leading to A50M and today are in the market for the next generation A100 but there rough field requirements dictate a military transport based airframe. The modern Optimum size for such would be a medium tactical transport but the prime suspect in that class would have been AN70, it’s canceled farther Antonov is Ukrainian and the IL 276 is still only on paper. So the Russians default back to the known Russian built active production IL76. But as technology as evolved they realized that they still had a ton of empty space and power so they added in more equipment to test. Still should be remembered that A100 is a flying lab demonstrator not production.
IMO, the kj-500 is not more dynamic and survivable than Y-20. The contrary is the case. Y-20 is faster and has a much longer endurance.
I dont know what that would be, unless we are talking UAV???
If you want faster build it on 919. If you want endurance build tankers and train extra operators. The range on Y20 is good for its class but not the end all be all. The one aspect I think where A Hypothetical KJ3000 based on a Y20 smokes Kj500 without equivocation is altitude. The Y9 is like all turboprop limited in ceiling.
Optimally a turbo prop will max at about 10,000m where a commercial airliner about 12,500m military models might push to 13,000m to 14,000m depending on build. Yet you can get that off a civilian airliner to.